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MANIFOLDPRESSUREAND ORIFICE SIZE FOR HIGHALTITUDEAPPLICATIONS
iii i iiiii_ ii_ !!!!!!!
i
NATURAL GAS MANIFOLD PRESSURE (" w.c.)
..............................................................
FOR THE 50,000, 75,000, 100,000 and 125,000 BTUH MODELS
MEAN ELEVATION
FEET ABOVE
SEA LEVEL
HEATING
0 to
2001 to
3001 to
4001 to
5001 to
6001 to
7001 to
VALUE
2000
3000
4000
5000
6000
7000
8000
at ALTITUDE
BTU/CU. FT,
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
No.
Pressure
No.
Pressure
No.
Pressure
No.
Pressure
No.
Pressure
No.
Pressure
No.
Pressure
700
41
3.7
725
41
3.7
41
3.4
750
41
3.5
42
3.6
775
41
3.6
42
3.6
42
3.3
800
41
3.6
42
3,7
42
3,4
42
3.1
825
41
3.7
41
3.4
42
3.5
42
3.2
42
2.9
850
41
3.5
42
3.6
42
3,3
42
3,0
42
2.8
875
41
3.6
42
3.6
42
3.4
42
3.1
42
2.8
42
2.6
900
42
3,7
42
3,4
42
3.2
42
2.9
42
2,7
42
2.5
925
41
3.7
42
3,5
42
3,3
42
3.0
42
2,8
42
2,5
42
2.3
950
41
3.5
42
3.3
42
3.1
42
2.9
42
2,6
42
2.4
43
2.7
975
42
3.7
42
3,2
42
2,9
42
2.7
42
2,5
42
2,3
43
2.6
1000
42
3.5
42
3.0
42
2.8
42
2.6
42
2.4
43
2.7
43
2.4
1050
42
3.2
42
2.7
42
2,5
42
2.3
43
2.6
1100
42
2.9
42
2.5
42
2.3
43
2.6
NOTE: Natural
gas data is based on 0.60 specific gravity.
For fuels with different
specific gravity
consult the National
Fuel Gas Code ANSI
Z223.1-2002/NFPA
54-2002
or National Standard of Canada, Natural Gas And Propane Installation
Code CSA B149.1-00.
Ta_i
CPG or PROPANE GAS MANIFOLD PRESSURE (" w.c.)
................................................................................................................
FOR THE 50,000, 75,000, 100,000 and 125,000 BTUH MODELS
HEATING VALUE
MEAN ELEVATION
FEET ABOVE SEA LEVEL
at ALTITUDE
0 to
2001 to
3001 to
4001 to
5001 to
6001 to
7001 to
BTU/CU, FT.
2000
3000
4000
5000
6000
7000
8000
2500
10.0
10.0
9.0
10.0
9.4
8.5
10.0
Orifice Size
#54
#54
#54
#55
#55
#55
NOTE: Propane data is based on 1.53 specific gravity. For fuels with different specific gravity consult the National Fuel Gas Code ANSI Z223.1-2002/N
FPA
54-2002 or National Standard Of Canada, Natural Gas And Propane Installation Code CSA B149.1-00.
NATURAL GAS MANIFOLD
PRESSURE (" w.c.)
..............................................................
FOR THE 80,000 BTUH MODELS
MEAN ELEVATION
FEET ABOVE
SEA LEVEL
HEATING
0 to
2001 to
3001 to
4001 to
5001 to
6001 to
7001 to
VALUE
2000
3000
4000
5000
6000
7000
8000
at ALTITUDE
BTU/CU. FT.
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
Orifice
Manifold
No.
Pressure
No.
Pressure
No.
Pressure
No.
Pressure
No.
Pressure
No.
Pressure
No.
Pressure
700
44
3.7
725
44
3.7
44
3.4
750
44
3,5
44
3.2
775
44
3.5
44
3.2
44
3.0
800
44
3.6
44
3.3
44
3.0
44
2.8
825
44
3,7
44
3.4
44
3,1
44
2,9
44
2.6
850
44
3.5
44
3.2
44
2,9
44
2.7
44
2.5
875
44
3,5
44
3,3
44
3.0
44
2.8
44
2,5
44
2.3
900
44
3.3
44
3.1
44
2.8
44
2.6
44
2.4
45
2.7
925
44
3.7
44
3,2
44
2,9
44
2.7
44
2.5
44
2,3
45
2.5
950
44
3.5
44
3,0
44
2,8
44
2.6
44
2,4
45
2.6
45
2.4
975
44
3.3
44
2,8
44
2.6
44
2.4
45
2.7
45
2.5
45
2.3
1000
44
3.2
44
2,7
44
2,5
44
2.3
45
2.6
45
2.4
46
2.3
1050
44
2.9
44
2.5
44
2.3
45
2.5
45
2.3
1100
44
2.6
45
2.7
45
2.5
45
2.3
NOTE: Natural
gas data is based on 0.60 specific gravity.
For fuels with different
specific gravity
consult the National
Fuel Gas Code ANSI
Z223.1-2002/NFPA
54-2002
or National Standard of Canada, Natural Gas And Propane Installation
Code CSA B149.1-00.
440 01 1020 04
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